US20090153078A1 - Led array circuit - Google Patents
Led array circuit Download PDFInfo
- Publication number
- US20090153078A1 US20090153078A1 US12/140,362 US14036208A US2009153078A1 US 20090153078 A1 US20090153078 A1 US 20090153078A1 US 14036208 A US14036208 A US 14036208A US 2009153078 A1 US2009153078 A1 US 2009153078A1
- Authority
- US
- United States
- Prior art keywords
- scanning line
- led
- horizontal scanning
- vertical scanning
- array circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0465—Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0254—Control of polarity reversal in general, other than for liquid crystal displays
- G09G2310/0256—Control of polarity reversal in general, other than for liquid crystal displays with the purpose of reversing the voltage across a light emitting or modulating element within a pixel
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Definitions
- the present invention relates to a LED array circuit, especially for the LED array circuit connecting and controlling two LEDs between a pair of horizontal scanning line and vertical scanning line.
- FIG. 1 shows the array structure diagram of the traditional LEDs, which contains LED 11 , LED 12 , the first vertical scanning line 13 , LED 14 , LED 15 , the second vertical scanning line 16 , the first horizontal scanning line 17 , and the second horizontal scanning line 18 .
- the traditional 2 ⁇ 2 LED array such as the one shown in FIG. 1 , contains one set of horizontal scanning lines and one set of vertical scanning lines.
- the horizontal scanning line set contains two horizontal scanning lines: the first horizontal scanning line 17 and the second horizontal scanning line 18 .
- the vertical scanning line set contains two vertical scanning lines: the first vertical scanning line 13 and the second vertical scanning line 16 .
- the traditional 2 ⁇ 2 LED array outputs logic high voltage by scanning on horizontal scanning lines 17 , 18 of the horizontal scanning line set, and outputs logic low voltage on the vertical scanning lines which are connected with the drived LED, to light on the LEDs. Any one of the LEDs will not turn on if the corresponding vertical scanning line outputs logic high voltage. For example, if LED 11 is going to turn on, the first vertical scanning line 13 outputs logic low voltage when we scan the first horizontal scanning line 17 (the positive end of LED 11 connects with the logic high voltage output of the first horizontal scanning line 17 , and the negative end of LED 11 connects with the logic low voltage output of the first vertical scanning line 13 , and this LED 11 will be turned on).
- the second vertical scanning line 16 outputs logic high voltage when we scan the second horizontal scanning line 18 (the positive end of LED 15 connects with the logic high voltage output of the second horizontal scanning line 18 , and the negative end of LED 15 connects with the logic high voltage output of the second vertical scanning line 16 , and this LED 15 will not turn on).
- An objective of the present invention is to provide a new and advanced LED array circuit, which revises the positive ends and negative ends of the two connected LEDs between every pair of horizontal scanning line and vertical scanning line, and output high level and logic low voltage alternately on the horizontal scanning lines and vertical scanning lines to drive more LEDs simultaneously on the LED array circuit.
- a LED array circuit has a plurality of LED units and each one of the LED units comprises:
- a first LED which connects with the horizontal scanning line by the positive end and connects with the vertical scanning line by the negative end;
- a second LED which connects with the vertical scanning line by the positive end and connects with the horizontal scanning line by the negative end;
- LED units is aligned each other by the connected horizontal scanning line and vertical scanning line to form the LED array circuit.
- the first LED is scanned on by providing a logic high voltage on the horizontal scanning line and providing a logic low voltage on the vertical scanning line.
- the second LED is scanned by providing a logic low voltage on the horizontal scanning line and providing a logic high voltage on the vertical scanning line.
- FIG. 1 shows the architecture diagram of the LED array circuit using the traditional technology
- FIG. 2 shows the architecture diagram of the LED array circuit according to the embodiment of the present invention.
- FIG. 2 shows the embodiment diagram of the LED array circuit according to the present invention, which contains the first LED 21 , the first LED 22 , the first vertical scanning line 23 , the second LED 24 , the second LED 25 , the first LED set 26 , the first LED 27 , the second vertical scanning line 28 , the second LED 29 , the first horizontal scanning line 210 , the second LED 211 , the second horizontal scanning line 212 , and LED unit 213 .
- a 2 ⁇ 2 array circuit structure contains four LED units 213 with one set of horizontal scanning lines and one set of vertical scanning lines.
- the set of horizontal scanning lines contains two horizontal scanning lines for the first horizontal scanning line 210 and the second horizontal scanning line 212 .
- the set of vertical scanning lines also contains two vertical scanning lines for the first vertical scanning line 23 and the second vertical scanning line 28 .
- the LED array circuit according to the present invention is able to electrical connect with two LED 21 , 22 , 24 , 25 , 26 , 27 , 29 , and 211 between every pair of horizontal scanning lines 210 , 212 and vertical scanning lines 23 , 28 , respectively.
- this LED array circuit structure contains two horizontal scanning lines 210 , 212 , and two vertical scanning lines 23 , 28 , is able to drive eight LEDs 21 , 22 , 24 , 25 , 26 , 27 , 29 , and 211 , totally.
- the driven solution of the first LEDs 21 , 22 , 26 , and 27 is the same with the traditional technology (output logic high voltage on the horizontal scanning lines 210 , 212 and output logic low voltage on the vertical scanning lines 23 , 28 ).
- the present invention uses another special driving solution: after the first LEDs 21 , 22 , 26 , and 27 being driven completely, making the horizontal scanning lines 210 , 212 output logic low voltage, and making the vertical scanning lines 23 and 28 output logic high voltage, to scan the second LEDs 24 , 25 , 29 , and 211 .
- This driving solution can turn off the second LEDs 24 , 25 , 29 , and 211 when the first LEDs 21 , 22 , 26 , and 27 are scanned; and also can turn off the first LEDs 21 , 22 , 26 , and 27 when the second LEDs 24 , 25 , 29 , and 211 are scanned, to drive one more times number of LEDs under the same structure.
- LED array circuit is able to drive two LEDs between every pair of horizontal scanning line and vertical scanning line, to make the same structure be able to drive one more times number of LEDs.
- the LED array circuit according to the present invention is able to electrical connect with two LEDs by inversed positive and negative connection between every pair of horizontal scanning line and vertical scanning line, and output high/low levels voltage on the horizontal scanning lines and vertical scanning lines alternately, to make the LED array circuit be able to drive one more times number of LEDs, with advanced and new technology.
- Any other modified design such as using different types of LEDs or increasing the scanning lines of the output ports, all belong to the protection field of the present invention once electrical connecting with two LEDs by inversed positive and negative connection between every pair of horizontal scanning line and vertical scanning line in the LED array circuit.
Abstract
The present invention relates to a LED array circuit having a plurality of LED units and each one of the LED units comprises a horizontal scanning line; a vertical scanning line; a first LED, which connects with the horizontal scanning line by the positive end and connects with the vertical scanning line by the negative end; and a second LED, which connects with the vertical scanning line by the positive end and connects with the horizontal scanning line by the negative end; wherein the LED units is aligned each other by the connected horizontal scanning line and vertical scanning line to form the LED array circuit.
Description
- The present invention relates to a LED array circuit, especially for the LED array circuit connecting and controlling two LEDs between a pair of horizontal scanning line and vertical scanning line.
-
FIG. 1 shows the array structure diagram of the traditional LEDs, which containsLED 11,LED 12, the firstvertical scanning line 13,LED 14,LED 15, the secondvertical scanning line 16, the firsthorizontal scanning line 17, and the secondhorizontal scanning line 18. - The traditional 2×2 LED array, such as the one shown in
FIG. 1 , contains one set of horizontal scanning lines and one set of vertical scanning lines. The horizontal scanning line set contains two horizontal scanning lines: the firsthorizontal scanning line 17 and the secondhorizontal scanning line 18. The vertical scanning line set contains two vertical scanning lines: the firstvertical scanning line 13 and the secondvertical scanning line 16. There can be connected with each one ofLED horizontal scanning lines vertical scanning lines horizontal scanning lines vertical scanning lines LED - The traditional 2×2 LED array outputs logic high voltage by scanning on
horizontal scanning lines LED 11 is going to turn on, the firstvertical scanning line 13 outputs logic low voltage when we scan the first horizontal scanning line 17 (the positive end ofLED 11 connects with the logic high voltage output of the firsthorizontal scanning line 17, and the negative end ofLED 11 connects with the logic low voltage output of the firstvertical scanning line 13, and thisLED 11 will be turned on). On the other hand, ifLED 15 will not turn on, the secondvertical scanning line 16 outputs logic high voltage when we scan the second horizontal scanning line 18 (the positive end ofLED 15 connects with the logic high voltage output of the secondhorizontal scanning line 18, and the negative end ofLED 15 connects with the logic high voltage output of the secondvertical scanning line 16, and thisLED 15 will not turn on). - There are several disadvantages in the prior technologies:
- In the traditional LED array circuit, there is only one LED can be connected and controlled between every pair of horizontal and vertical scanning lines, but no more any LED be arranged, so the size can't be reduced.
- Therefore, how to drive more LEDs at the same time in the LED array circuit to improve above disadvantages is the major topic of the present invention.
- An objective of the present invention is to provide a new and advanced LED array circuit, which revises the positive ends and negative ends of the two connected LEDs between every pair of horizontal scanning line and vertical scanning line, and output high level and logic low voltage alternately on the horizontal scanning lines and vertical scanning lines to drive more LEDs simultaneously on the LED array circuit.
- According to the invention, a LED array circuit has a plurality of LED units and each one of the LED units comprises:
- a horizontal scanning line;
- a vertical scanning line;
- a first LED, which connects with the horizontal scanning line by the positive end and connects with the vertical scanning line by the negative end;
- a second LED, which connects with the vertical scanning line by the positive end and connects with the horizontal scanning line by the negative end;
- wherein the LED units is aligned each other by the connected horizontal scanning line and vertical scanning line to form the LED array circuit.
- In accordance with one aspect of the present invention, the first LED is scanned on by providing a logic high voltage on the horizontal scanning line and providing a logic low voltage on the vertical scanning line.
- In accordance with one aspect of the present invention, the second LED is scanned by providing a logic low voltage on the horizontal scanning line and providing a logic high voltage on the vertical scanning line.
- The present invention may best be understood through the following description with reference to the accompanying drawings, in which:
-
FIG. 1 shows the architecture diagram of the LED array circuit using the traditional technology; -
FIG. 2 shows the architecture diagram of the LED array circuit according to the embodiment of the present invention. -
FIG. 2 shows the embodiment diagram of the LED array circuit according to the present invention, which contains thefirst LED 21, thefirst LED 22, the firstvertical scanning line 23, thesecond LED 24, thesecond LED 25, thefirst LED set 26, thefirst LED 27, the secondvertical scanning line 28, thesecond LED 29, the firsthorizontal scanning line 210, thesecond LED 211, the secondhorizontal scanning line 212, andLED unit 213. - In accordance with the executing embodiment to the present invention of LED array circuit, as shown in
FIG. 2 , there is a 2×2 array circuit structure contains fourLED units 213 with one set of horizontal scanning lines and one set of vertical scanning lines. The set of horizontal scanning lines contains two horizontal scanning lines for the firsthorizontal scanning line 210 and the secondhorizontal scanning line 212. The set of vertical scanning lines also contains two vertical scanning lines for the firstvertical scanning line 23 and the secondvertical scanning line 28. Different from the traditional technology, the LED array circuit according to the present invention is able to electrical connect with twoLED horizontal scanning lines vertical scanning lines first LEDs vertical scanning lines second LEDs vertical scanning lines horizontal scanning lines horizontal scanning lines vertical scanning lines LEDs - In accordance with the executing embodiment to the present invention of LED array circuit, the driven solution of the
first LEDs horizontal scanning lines vertical scanning lines 23, 28). However, for thesecond LEDs first LEDs horizontal scanning lines vertical scanning lines second LEDs second LEDs first LEDs first LEDs second LEDs - There are several advantages of the present invention:
- In accordance with the executing embodiment to the present invention of LED array circuit, is able to drive two LEDs between every pair of horizontal scanning line and vertical scanning line, to make the same structure be able to drive one more times number of LEDs.
- To sum up, the LED array circuit according to the present invention is able to electrical connect with two LEDs by inversed positive and negative connection between every pair of horizontal scanning line and vertical scanning line, and output high/low levels voltage on the horizontal scanning lines and vertical scanning lines alternately, to make the LED array circuit be able to drive one more times number of LEDs, with advanced and new technology. Any other modified design such as using different types of LEDs or increasing the scanning lines of the output ports, all belong to the protection field of the present invention once electrical connecting with two LEDs by inversed positive and negative connection between every pair of horizontal scanning line and vertical scanning line in the LED array circuit.
- While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention need not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims to be accorded with the broadest interpretation so as to encompass all such modifications and similar solutions.
Claims (3)
1. A LED array circuit having a plurality of LED units and each one of the LED units comprising:
a horizontal scanning line;
a vertical scanning line;
a first LED, which connects with the horizontal scanning line by the positive end and connects with the vertical scanning line by the negative end;
a second LED, which connects with the vertical scanning line by the positive end and connects with the horizontal scanning line by the negative end;
wherein the LED units is aligned each other by the connected horizontal scanning line and vertical scanning line to form the LED array circuit.
2. The LED array circuit according to claim 1 , wherein the first LED is scanned by providing a logic high voltage on the horizontal scanning line and providing a logic low voltage on the vertical scanning line.
3. The LED array circuit according to claim 1 wherein the second LED is scanned by providing a logic low voltage on the horizontal scanning line and providing a logic high voltage on the vertical scanning line.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW096221460U TWM343922U (en) | 2007-12-14 | 2007-12-14 | LED matrix structure |
TW096221460 | 2007-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090153078A1 true US20090153078A1 (en) | 2009-06-18 |
Family
ID=40473394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/140,362 Abandoned US20090153078A1 (en) | 2007-12-14 | 2008-06-17 | Led array circuit |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090153078A1 (en) |
EP (1) | EP2071902A3 (en) |
JP (1) | JP3145711U (en) |
TW (1) | TWM343922U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170309222A1 (en) * | 2016-04-25 | 2017-10-26 | Samsung Electronics Co., Ltd. | Led display module, display apparatus and controlling method thereof |
US11670224B1 (en) * | 2022-01-06 | 2023-06-06 | Novatek Microelectronics Corp. | Driving circuit for LED panel and LED panel thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT15265U1 (en) * | 2014-07-29 | 2017-04-15 | Tridonic Gmbh & Co Kg | LED control circuit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060082526A1 (en) * | 2004-10-20 | 2006-04-20 | Hewlett-Packard Development Company, L.P. | Display device |
US20070080355A1 (en) * | 2005-05-13 | 2007-04-12 | Industrial Technology Research Institute | Alternating current light-emitting device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3808534B2 (en) * | 1996-02-09 | 2006-08-16 | Tdk株式会社 | Image display device |
JP2003345308A (en) * | 2002-05-29 | 2003-12-03 | Pioneer Electronic Corp | Display panel and display device |
JP2007005072A (en) * | 2005-06-22 | 2007-01-11 | Toyota Industries Corp | Light-emitting device using organic electroluminescent element and display device |
-
2007
- 2007-12-14 TW TW096221460U patent/TWM343922U/en not_active IP Right Cessation
-
2008
- 2008-06-17 US US12/140,362 patent/US20090153078A1/en not_active Abandoned
- 2008-08-06 JP JP2008005478U patent/JP3145711U/en not_active Expired - Lifetime
- 2008-08-20 EP EP08162654A patent/EP2071902A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060082526A1 (en) * | 2004-10-20 | 2006-04-20 | Hewlett-Packard Development Company, L.P. | Display device |
US7557782B2 (en) * | 2004-10-20 | 2009-07-07 | Hewlett-Packard Development Company, L.P. | Display device including variable optical element and programmable resistance element |
US20070080355A1 (en) * | 2005-05-13 | 2007-04-12 | Industrial Technology Research Institute | Alternating current light-emitting device |
US7544524B2 (en) * | 2005-05-13 | 2009-06-09 | Industrial Technology Research Institute | Alternating current light-emitting device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170309222A1 (en) * | 2016-04-25 | 2017-10-26 | Samsung Electronics Co., Ltd. | Led display module, display apparatus and controlling method thereof |
US10115336B2 (en) * | 2016-04-25 | 2018-10-30 | Samsung Electronics Co., Ltd. | LED display module, display apparatus and controlling method thereof |
US11670224B1 (en) * | 2022-01-06 | 2023-06-06 | Novatek Microelectronics Corp. | Driving circuit for LED panel and LED panel thereof |
Also Published As
Publication number | Publication date |
---|---|
JP3145711U (en) | 2008-10-16 |
TWM343922U (en) | 2008-11-01 |
EP2071902A2 (en) | 2009-06-17 |
EP2071902A3 (en) | 2009-10-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: EOREX CORPORATION, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIN, VILMAR;REEL/FRAME:021104/0554 Effective date: 20080610 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |